A connector attached to a device, includes a main body made from resin and having an annular shape, a wire including a terminal, and a shield shell that covers at least a portion of the main body. The shield shell is fixed to the device such that a gap exists between the shield shell and the main body. Protrusions are provided on at least one of (i) a section of the shield shell covering the main body or (ii) a section of the main body covered by the shield shell, the protrusions protruding toward the section of the shield shell or the section of the main body. The protrusions surround a fastening position where the terminal and the terminal fixing section are fastened together.